D81
Non-billableCombined immunodeficiencies
D81 is the ICD-10-CM code for Combined immunodeficiencies. It is a non-billable category code — use a more specific child code such as D81.0 for billing.
- Status
- Header (non-billable)
- Chapter
- D50-D89
- Subcodes
- 10
- Edition
- FY2026
D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Excludes1 — not coded here
- •autosomal recessive agammaglobulinemia (Swiss type) (D80.0)
Frequently asked questions
- What is ICD-10 code D81?
- D81 is the ICD-10-CM code for "Combined immunodeficiencies". It falls under D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
- Is D81 a billable code?
- No — D81 is a non-billable header code. Use a more specific child code (such as D81.0) for billing.
- What is excluded from D81?
- Excludes1 (not coded here): autosomal recessive agammaglobulinemia (Swiss type) (D80.0).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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